WO2023193788A1 - Method for receiving oam code block, and device - Google Patents

Abstract

Provided in the present disclosure are a method for receiving an OAM code block, and a device. The method comprises: a first device determining a window for detecting an OAM code block of a path layer of a metro transport network; and the first device detecting, within the window, an OAM code block in a code block stream.

Description

OAM code block receiving method and equipment

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202210362675.5 filed in China on April 7, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of data communication technology, and specifically relates to a method and device for receiving OAM code blocks.

Background technique

With the development of the ^5th Generation (5G) mobile communications and the increase in users in vertical industries, the network's demand for slicing has increased. The industry has made many useful explorations in Ethernet-based slicing isolation technology. For example, Flex Ethernet (FlexE) technology provides a slicing mechanism based on Ethernet physical interfaces and can provide an effective interface-level isolation mechanism. However, FlexE is currently only an interface-level technology and cannot meet the networking requirements of operator networks. Metro Transport Network (MTN) is a new transport network technology system defined for new business requirements such as 5G. It can realize the effective integration of Time Division Multiplexing (TDM) and packet switching. It is composed of Section ) layer and channel (Path) layer. The metro transport section layer reuses FlexE logic to support port binding and is compatible with the Ethernet underlying protocol stack and standard Ethernet optical modules; the metro transport network Path layer supports time division multiplexing (TDM) switching based on 66B code blocks, with complete terminal The end-to-end Operation Administration and Maintenance (OAM) mechanism supports cross-multiplexing of any Nx5G channelized client signals. 66B encoding is a standard encoding method that reduces encoding overhead and hardware complexity. 66B encoding encodes 64-bit data or control information into 66-bit bit blocks (code blocks) for transmission. The first two bits of the 66-bit bits represent the synchronization header, which is mainly used for data alignment at the receiving end and the reception of the data bit stream. Synchronize.

OAM at the MTN technology Path layer is carried through 66B code blocks, including basic message (basic message) code blocks (B code blocks), automatic protection switching (Automatic Protection Switching, APS) code blocks (A code blocks), low priority Level message (Low priority message) code block (L code block) and other types, and are inserted and carried in the code stream according to a certain period. Through the complete OAM function, link connectivity detection and performance detection can be realized, protection switching can be triggered in time, and the operation, management and maintenance functions of each layer of the network can be realized.

MTN Path layer OAM, as an operation and maintenance mechanism, requires correct detection and reception. In conventional technology, OAM code block detection needs to be performed block by block from the code block stream. The detection requires large hardware resources and is complex to implement.

Contents of the invention

At least one embodiment of the present disclosure provides a method and device for receiving OAM code blocks, which are used to implement more effective OAM code block detection and reduce processing resources required for detection.

In order to solve the above technical problems, the present disclosure is implemented as follows:

In a first aspect, embodiments of the present disclosure provide a method for receiving OAM code blocks, including:

The first device determines a window for detecting OAM code blocks at the channel layer of the metropolitan area transport network;

The first device detects OAM code blocks in the code block stream within the window.

Optionally, the first device determines a window for detecting OAM code blocks at the metro transport network channel layer, including:

After detecting at least one OAM code block, the first device determines the window based on the position of the detected OAM code block and the OAM code block period.

Optionally, determine the window based on the detected position of the OAM code block and the OAM code block period, including:

According to the detected position of the OAM code block and the OAM code block period, the position point where the OAM code block periodically appears is determined; each time window including the position point is used as the window.

Optionally, the length of the window is determined according to a preset ratio of the OAM code block period.

Optionally, the method also includes:

When the OAM code block period changes, the position and/or length of the window is adjusted according to the changed OAM code block period.

Optionally, before determining a window for detecting OAM code blocks at the metro transport network channel layer, the method further includes:

The first device detects the code block stream block by block according to the control code block field and the O code field. Test, and at least one OAM code block is detected.

Optionally, the method also includes:

Obtain the first detection results of the OAM code blocks in each window;

When the first detection result satisfies the first condition, an OAM loss alarm is generated.

Optionally, the first condition includes at least one of the following:

The window in which consecutive OAM code blocks are not detected reaches the first number;

Within the continuous second number of detection windows, the windows in which OAM code blocks are not detected reach a third number, and the third number is smaller than the second number;

No OAM code block is detected within the first time range.

Optionally, after the OAM loss alarm is generated, the method further includes:

Obtain the second detection results of the OAM code blocks in each window;

If the second detection result satisfies the second condition, the OAM loss alarm is eliminated.

Optionally, the second condition includes at least one of the following:

The window in which OAM code blocks are continuously detected reaches the fourth number;

Within the continuous fifth number of detection windows, the windows in which OAM code blocks are detected reach the sixth number, and the sixth number is less than the fifth number;

The OAM code block is detected within the second time range.

Optionally, the method also includes:

The detection of the OAM code block means that the OAM code block is detected within the window, and the type of the OAM code block detected matches the sending sequence sequence of the OAM code block type;

The non-detection of the OAM code block means that the OAM code block is not detected within the window, or the type of the OAM code block detected within the window does not match the transmission sequence sequence of the OAM code block type.

Optionally, the method also includes:

For the OAM code block of the preset type, obtain the third detection result of the OAM code block of the preset type within each first window, wherein the first window is a window used to detect the OAM code block of the preset type;

When the third detection result satisfies the third condition, the OAM loss alarm of the preset type is generated.

Optionally, the third condition includes at least one of the following:

The first window in which consecutive OAM code blocks of the preset type are not detected reaches a seventh number;

Within the eighth consecutive number of first detection windows, the number of first windows in which the OAM code blocks of the preset type are not detected reaches a ninth number, and the ninth number is less than the eighth number;

The OAM code block of the preset type is not detected within the third time range.

Optionally, after generating the OAM loss alarm of the preset type, the method further includes:

For the OAM code block of the preset type, obtain the fourth detection result of the OAM code block of the preset type in each first window;

If the fourth detection result satisfies the fourth condition, the preset type of OAM loss alarm is eliminated.

Optionally, the fourth condition includes at least one of the following:

The first window in which the OAM code blocks of the preset type are continuously detected reaches the tenth number;

Within the eleventh consecutive number of first detection windows, the first window in which the preset type of OAM code blocks is detected reaches a twelfth number, and the twelfth number is less than the eleventh number;

The preset type of OAM code block is detected within a fourth time range.

Optionally, for different types of OAM code blocks, the conditions for detecting OAM code block loss are the same or different.

In a second aspect, an embodiment of the present disclosure provides a communication device, including:

The first determination module is used to determine the window used to detect OAM code blocks at the metropolitan transport network channel layer;

The first detection module is used to detect OAM code blocks in the code block stream within the window.

In a third aspect, an embodiment of the present disclosure provides a communication device, including: a processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor Implement the steps of the method described in the first aspect.

In a fourth aspect, embodiments of the present disclosure provide a computer-readable storage medium. A program is stored on the computer-readable storage medium. When the program is executed by a processor, the steps of the above method are implemented.

Compared with related technologies, the operation and maintenance management code block reception method and device provided by the embodiments of the present disclosure set a window according to the characteristics of the periodic transmission of MTN Path layer OAM code blocks and the characteristics of the code block frame format, and only in the window Detect OAM code blocks within the code block, thereby avoiding the problems caused by detecting OAM code blocks block by block, which requires large hardware resources and complex implementation, and achieves a more effective OAM code block detection reduces the processing resources required for detection.

Description of the drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the disclosure. Also throughout the drawings, the same reference characters are used to designate the same components. In the attached picture:

Figure 1 is a flow chart of a method for receiving OAM code blocks according to an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of an OAM code block;

Figure 3 is an example diagram of a window according to an embodiment of the present disclosure;

Figure 4 is a schematic diagram of the sending sequence of different types of OAM code blocks;

Figure 5 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

Figure 6 is a schematic structural diagram of a communication device according to another embodiment of the present disclosure;

Figure 7 is a schematic structural diagram of a communication device according to another embodiment of the present disclosure.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a thorough understanding of the disclosure, and to fully convey the scope of the disclosure to those skilled in the art.

The terms "first", "second", etc. in the description and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used are interchangeable under appropriate circumstances so that the embodiments of the disclosure described herein, for example, can be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus. In the description and claims, "and/or" means at least one of the connected objects.

The following description provides examples and does not limit the scope, applicability, or configurations set forth in the claims. Changes may be made in the function and arrangement of the elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

As mentioned in the background art, when detecting OAM code blocks from the MTN Path layer in related technologies, OAM code blocks need to be detected block by block from the code block stream, resulting in large hardware resources required for detection and complex implementation. In order to solve at least one of the above problems, an embodiment of the present disclosure provides a method for receiving operation and maintenance management code blocks. As shown in Figure 1, the method includes:

Step 11: The first device determines a window for detecting OAM code blocks at the channel layer of the metropolitan area transport network.

The code block or OAM code block described in this article refers to a 66-bit bit block generated using 66B encoding technology. Compared to detecting code blocks one by one, the embodiment of the present disclosure determines a window for detecting the OAM module based on the possible positions of the OAM code blocks. This window may also be called a receiving window or a detection window.

Step 12: The first device detects OAM code blocks in the code block stream within the window.

Here, the embodiment of the present disclosure detects the OAM module within a determined window, thereby avoiding problems such as detecting OAM code blocks block by block, which requires large hardware resources and is complex to implement. Since the window is set according to the possible position of the OAM code block, the embodiments of the present disclosure can achieve more effective OAM code block detection and reduce the processing resources required for detection.

In the above step 11, after detecting at least one OAM code block, the first device may determine the window based on the position of the detected OAM code block and the OAM code block period. Generally, to ensure that at least one OAM code block in the code block stream is detected, the first device needs to scan and identify at least one OAM code block period. The OAM code block period refers to the transmission period of the OAM code block.

Before step 11, the first device may detect the code block stream block by block according to the control code block field and the O code field, and detect at least one OAM code block. Specifically, the first device can use a code block-by-code block detection method to perform OAM code block detection on the code block stream of the metropolitan area transport network channel layer. For example, the first device starts to detect 66B of the MTN Path layer of the metropolitan area transport network channel layer. Looking for OAM code blocks in the code block stream, you can identify the OAM code blocks through 0x4B (control code block field) and 0xC (O code field) of the 66B code block. The positions of 0x4B and 0xC are shown in Figure 2.

After at least one OAM code block is detected in step 11, the embodiment of the present disclosure may determine a window for detecting the periodicity of the OAM code block based on the position of the detected OAM code block and the OAM code block period. These windows are periodically repeated, and their periodic size is equal to the OAM code block period. Specifically, the position point where the OAM code block periodically appears can be determined based on the detected position of the OAM code block and the OAM code block period; then, each time window including the position point is used as the window.

For example, after the first device identifies one or more OAM code blocks (usually at least one or more OAM cycle times are required to be scanned and identified), the first device determines the subsequent OAM code block based on the currently recognized OAM code block position and OAM code block period. window. Specifically, as shown in Figure 3, according to the position of the identified OAM code block, the position point that is an integer multiple of the OAM code block period T is determined from the position, and for each position point, a certain width is generated including the position point. For example, as shown in Figure 3, assuming that the OAM code block is recognized at position t ₀ and the duration of the window is δ, then the starting point of each subsequent window on the time axis is t ₀ +n*T -0.5δ, the end point is t ₀ +n*T+0.5δ, where n is an integer greater than or equal to 1.

In the embodiment of the present disclosure, the duration of the window is related to the OAM cycle. For example, the length of the window is determined according to a preset ratio of the OAM code block period. That is to say, the window size can be set to a certain ratio of the OAM period. For example, the OAM code block period is T and the window size is 5% T. When the OAM code block period changes, the position and/or length of the window is adjusted according to the changed OAM code block period.

In this way, in the above step 12, the first device can detect the OAM code block from the code block stream of the metropolitan area transport network channel layer according to the determined window, that is, the OAM code block is detected only within the window, and the OAM code block is detected outside the window. OAM code blocks are not detected. Specifically, within each window, the first device receives and identifies the OAM code block. The OAM code block can be identified by 0x4B (control code block field) and 0xC (O code field) of the 66B code block.

Through the above steps, the embodiments of the present disclosure can avoid the problems caused by detecting OAM code blocks block by block, which requires large hardware resources and is complex to implement. Since the window is set according to the possible position of the OAM code block, the embodiments of the present disclosure can achieve more effective OAM code block detection and reduce the processing resources required for detection.

Further, the embodiment of the present disclosure can also identify different types of OAM code blocks in step 12, For example, basic message code block (basic message, also known as B code block), APS message code block (Automatic Protection Switching message, also known as A code block), low priority message (Low priority message, L code block) CV message code block (connectivity verification) and CS message code block (Client signal information). As shown in Figure 2, different types of OAM code blocks can be identified through the type field in the 66B code block. Specifically, the type field is at the position of byte 1 in the 66B code block.

In actual applications, OAM code blocks may be lost due to reasons such as transmission or equipment failure. In view of the above situation, the embodiments of the present disclosure can obtain the detection results of the OAM code blocks in each window (for convenience of description, here are called the first detection results). The detection results are used to indicate whether the OAM code is detected in the corresponding window. piece. When the first detection result satisfies the first condition, an OAM loss alarm is generated. Specifically, the first condition may include at least one of the following:

1) The window in which consecutive OAM code blocks are not detected reaches a first number, and the first number is an integer greater than or equal to 1.

For example, if no OAM code block is detected within m consecutive windows, m is an integer greater than or equal to 1;

2) Within the continuous second number of detection windows, the windows in which OAM code blocks are not detected reach a third number, the third number and the second number are both integers greater than or equal to 1, and the third number is less than Second quantity.

For example, no OAM code block is detected in p windows among q consecutive windows, q and p are both integers greater than or equal to 1, and p is less than q.

3) No OAM code block is detected within the first time range.

The first time range represents a preset period of time during which no OAM code block is detected.

After the OAM loss alarm is generated, the embodiment of the present disclosure can further obtain the detection results of the OAM code blocks in each window (for convenience of description, it is called the second detection result here). If the second detection result satisfies the second condition, the OAM loss alarm is eliminated. Specifically, the second condition may include at least one of the following:

1) The window in which OAM code blocks are continuously detected reaches a fourth number, and the fourth number is an integer greater than or equal to 1.

For example, if OAM code blocks are detected in k consecutive windows, m is an integer with k equal to or equal to 1;

2) Within the fifth consecutive detection window, the window in which the OAM code block is detected reaches the sixth number. quantity, the fifth quantity and the sixth quantity are both integers greater than or equal to 1, and the sixth quantity is smaller than the fifth quantity.

For example, if an OAM code block is detected in z windows among w consecutive windows, w and z are both integers greater than or equal to 1, and z is smaller than w.

3) The OAM code block is detected within the second time range.

The second time range also represents a preset time within which the OAM code block is detected.

In the embodiment of the present disclosure, the detection of the OAM code block may refer to the detection of the OAM code block within the window, and the type of the detected OAM code block matches the transmission sequence sequence of the OAM code block type. The non-detection of the OAM code block means that the OAM code block is not detected within the window, or the type of the OAM code block detected within the window does not match the transmission sequence sequence of the OAM code block type.

For example, if according to the sending sequence order of OAM code block types, the OAM code block type corresponding to a certain window is B code block, and if a B code block is detected in the window, it is judged that an OAM code block is detected in the window; If no OAM code block is detected in this window, or other types of OAM code blocks are detected (that is, the detected OAM code block is not a B code block), it is determined that no OAM code block is detected in this window.

In the embodiment of the present disclosure, in addition to identifying and determining the received OAM code block type in the window, the first device also determines whether the received OAM code block type conforms to the transmission sequence sequence (pattern) of the OAM code block type.

For example, as shown in Figure 4, assume that the sending end MTN OAM sends OAM code blocks in the order of BABL. Here, in BABL represents the B code block, A represents the A code block, and L represents the L code block. If the OAM code block type recognized by the first device within a certain window does not comply with the expected sending order, it is determined that the OAM code block has not been detected. For example, if a B code block is detected in the window after the B code block, it does not meet expectations.

Furthermore, the embodiments of the present disclosure can also implement more detailed OAM code block loss alarms for different types of OAM code blocks.

For example, for a preset type of OAM code block, a third detection result of a preset type of OAM code block within each first window is obtained, wherein the first window is used to detect the preset type of OAM code block. The window, specifically, the position of the first window can be determined according to the transmission sequence sequence of the OAM code block type. Then, when the third detection result satisfies the third condition, a OAM loss alarm of the preset type is generated.

Specifically, the third condition includes at least one of the following:

1) The first window in which the OAM code blocks of the preset type are not continuously detected reaches a seventh number, and the seventh number is an integer greater than or equal to 1.

2) Within the eighth consecutive number of first detection windows, the number of first windows in which the OAM code blocks of the preset type are not detected reaches the ninth number, and both the eighth number and the ninth number are greater than or equal to An integer of 1, the ninth quantity is less than the eighth quantity;

3) The OAM code block of the preset type is not detected within the third time range.

The third time range represents a preset period of time during which the OAM code block of the preset type is not detected.

After the OAM loss alarm of the preset type is generated, the embodiment of the present disclosure can also obtain the fourth detection result of the OAM code block of the preset type in each first window for the OAM code block of the preset type; If the fourth detection result satisfies the fourth condition, the OAM loss alarm of the preset type is eliminated.

Specifically, the fourth condition includes at least one of the following:

1) The first window in which the OAM code blocks of the preset type are continuously detected reaches a tenth number, and the tenth number is an integer greater than or equal to 1.

2) Within the eleventh consecutive number of first detection windows, the first window in which the preset type of OAM code blocks is detected reaches the twelfth number, and the eleventh number and the twelfth number are both An integer greater than or equal to 1, and the twelfth quantity is less than the eleventh quantity;

3) The OAM code block of the preset type is detected within the fourth time range.

The fourth time range represents a preset time period, and the OAM code block of the preset type is detected within this time period.

In the embodiment of the present disclosure, for different types of OAM code blocks, the conditions for detecting OAM code block loss are the same or different. For example, the third time range for the A code block may be the same as or different from the third time range for the B code block.

Through the above steps, the embodiment of the present disclosure can generate an OAM loss alarm (defect) if one OAM code block is not detected or multiple OAM code blocks are not detected within a certain period of time. Basic messages, APS messages, CV messages, and CS messages can also be processed according to different OAM types. Wait for a loss alarm to be generated respectively. For example, if one basic message OAM code block is not detected within a certain period of time, or if multiple basic message OAM code blocks are not detected, a basic message OAM loss alarm (basic message defect) is generated. For different OAM types, the time to detect loss can be the same or different. After a loss alarm is generated, if an OAM code block is subsequently detected in the window or multiple OAM code blocks are detected continuously, the loss alarm will be cleared. If the alarms are to distinguish different OAM code block types, they need to be detected and eliminated separately.

As can be seen from the above, the embodiments of the present disclosure make full use of the characteristics of periodic transmission of MTN Path layer OAM code blocks and the characteristics of the code block frame format, making reception detection more effective and consuming less processing resources.

Various methods of embodiments of the present disclosure have been introduced above. The apparatus for implementing the above method will be further provided below.

Referring to Figure 5, an embodiment of the present disclosure also provides a communication device 500, including:

The first determination module 501 is used to determine the window used to detect OAM code blocks at the metropolitan transport network channel layer;

The first detection module 502 is used to detect OAM code blocks in the code block stream within the window.

Optionally, the first determination module is further configured to determine the window based on the position of the detected OAM code block and the period of the OAM code block after detecting at least one OAM code block.

Optionally, the first determination module is also configured to determine the position points where the OAM code blocks periodically appear based on the detected position of the OAM code block and the OAM code block period; time window as said window.

Optionally, the length of the window is determined according to a preset ratio of the OAM code block period.

Optionally, the communication device also includes:

The first adjustment module is configured to adjust the position and/or length of the window according to the changed OAM code block period when the OAM code block period changes.

Optionally, the communication device also includes:

The second detection module is used to detect the code block stream block by block according to the control code block field and the O code field before determining the window for detecting the OAM code block at the metro transport network channel layer, and detect at least one OAM code block.

Optionally, the communication device also includes:

The first alarm module is used to obtain the first detection result of the OAM code block in each window; when the first detection result meets the first condition, an OAM loss alarm is generated.

Optionally, the first condition includes at least one of the following:

The window in which consecutive OAM code blocks are not detected reaches the first number;

Within the continuous second number of detection windows, the windows in which OAM code blocks are not detected reach a third number, and the third number is smaller than the second number;

No OAM code block is detected within the first time range.

Optionally, the communication device also includes:

The first elimination module is configured to obtain the second detection result of the OAM code block in each window after the OAM loss alarm is generated; and eliminate the OAM loss alarm if the second detection result satisfies the second condition.

Optionally, the second condition includes at least one of the following:

The window in which OAM code blocks are continuously detected reaches the fourth number;

Within the continuous fifth number of detection windows, the windows in which OAM code blocks are detected reach the sixth number, and the sixth number is less than the fifth number;

The OAM code block is detected within the second time range.

Optionally, the detection of the OAM code block means that the OAM code block is detected within the window, and the type of the OAM code block detected matches the sending sequence sequence of the OAM code block type;

The non-detection of the OAM code block means that the OAM code block is not detected within the window, or the type of the OAM code block detected within the window does not match the transmission sequence sequence of the OAM code block type.

Optionally, the communication device also includes:

The second alarm module is used to obtain the third detection result of the OAM code block of the preset type in each first window for the OAM code block of the preset type, wherein the first window is used to detect the preset type. the window of the OAM code block; when the third detection result satisfies the third condition, the OAM loss alarm of the preset type is generated.

Optionally, the third condition includes at least one of the following:

The first window in which consecutive OAM code blocks of the preset type are not detected reaches a seventh number;

Within the eighth consecutive number of first detection windows, the number of first windows in which the OAM code blocks of the preset type are not detected reaches a ninth number, and the ninth number is less than the eighth number;

The OAM code block of the preset type is not detected within the third time range.

Optionally, the communication device also includes:

The second elimination module is configured to obtain the fourth detection result of the OAM code block of the preset type in each first window for the OAM code block of the preset type after the OAM loss alarm of the preset type is generated; in If the fourth detection result satisfies the fourth condition, the OAM loss alarm of the preset type is eliminated.

Optionally, the fourth condition includes at least one of the following:

The first window in which the OAM code blocks of the preset type are continuously detected reaches the tenth number;

Within the eleventh consecutive number of first detection windows, the first window in which the preset type of OAM code blocks is detected reaches a twelfth number, and the twelfth number is less than the eleventh number;

The preset type of OAM code block is detected within a fourth time range.

Optionally, for different types of OAM code blocks, the conditions for detecting OAM code block loss are the same or different.

It should be noted that the device in this embodiment is the device corresponding to the above method. The implementation methods in each of the above embodiments are applicable to the embodiment of the device, and the same technical effect can be achieved. The above-mentioned equipment provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects in this embodiment that are the same as those in the method embodiments will not be detailed here. Repeat.

Referring to Figure 6, an embodiment of the present disclosure also provides a communication device 600, including: a transceiver 601 and a processor 602;

The processor 602 is configured to determine a window for detecting OAM code blocks at the metropolitan area transport network channel layer.

The transceiver 601 is configured to detect OAM code blocks in the code block stream within the window.

Optionally, the processor is further configured to determine the window based on the position of the detected OAM code block and the period of the OAM code block after detecting at least one OAM code block.

Optionally, the processor is also configured to determine the position point where the OAM code block periodically appears based on the detected position of the OAM code block and the OAM code block period; and add each time window including the position point to , as the window.

Optionally, the length of the window is determined according to a preset ratio of the OAM code block period.

Optionally, the processor is also configured to, when the OAM code block period changes, base Adjust the position and/or length of the window according to the changed OAM code block period.

Optionally, the processor is also configured to detect the code block stream block by block according to the control code block field and the O code field before determining a window for detecting OAM code blocks at the metropolitan area transport network channel layer. , at least one OAM code block is detected.

Optionally, the processor is also configured to obtain the first detection result of the OAM code block in each window; when the first detection result satisfies the first condition, generate an OAM loss alarm.

Optionally, the first condition includes at least one of the following:

The window in which consecutive OAM code blocks are not detected reaches the first number;

Within the continuous second number of detection windows, the windows in which OAM code blocks are not detected reach a third number, and the third number is smaller than the second number;

No OAM code block is detected within the first time range.

Optionally, the processor is also configured to obtain a second detection result of the OAM code block in each window after generating an OAM loss alarm; in the case where the second detection result satisfies the second condition, eliminate all Describe the OAM loss alarm.

Optionally, the second condition includes at least one of the following:

The window in which OAM code blocks are continuously detected reaches the fourth number;

Within the continuous fifth number of detection windows, the windows in which OAM code blocks are detected reach the sixth number, and the sixth number is less than the fifth number;

The OAM code block is detected within the second time range.

Optionally, the detection of the OAM code block means that the OAM code block is detected within the window, and the type of the OAM code block detected matches the sending sequence sequence of the OAM code block type;

The non-detection of the OAM code block means that the OAM code block is not detected within the window, or the type of the OAM code block detected within the window does not match the transmission sequence sequence of the OAM code block type.

Optionally, the processor is also configured to obtain a third detection result of a preset type of OAM code block within each first window for a preset type of OAM code block, wherein the first window is used In a window for detecting a preset type of OAM code block; when the third detection result satisfies a third condition, an OAM loss alarm of the preset type is generated.

Optionally, the third condition includes at least one of the following:

The first window in which consecutive OAM code blocks of the preset type are not detected reaches a seventh number;

Within the eighth consecutive number of first detection windows, the number of first windows in which the OAM code blocks of the preset type are not detected reaches a ninth number, and the ninth number is less than the eighth number;

The OAM code block of the preset type is not detected within the third time range.

Optionally, the processor is further configured to, after generating the OAM loss alarm of the preset type, obtain the OAM code block of the preset type within each first window for the OAM code block of the preset type. Four detection results; if the fourth detection result satisfies the fourth condition, eliminate the OAM loss alarm of the preset type.

Optionally, the fourth condition includes at least one of the following:

The first window in which the OAM code blocks of the preset type are continuously detected reaches the tenth number;

Within the eleventh consecutive number of first detection windows, the first window in which the preset type of OAM code blocks is detected reaches a twelfth number, and the twelfth number is less than the eleventh number;

The preset type of OAM code block is detected within a fourth time range.

Optionally, for different types of OAM code blocks, the conditions for detecting OAM code block loss are the same or different.

It should be noted that the device in this embodiment is the device corresponding to the above method. The implementation methods in each of the above embodiments are applicable to the embodiment of the device, and the same technical effect can be achieved. The above-mentioned equipment provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects in this embodiment that are the same as those in the method embodiments will not be detailed here. Repeat.

Please refer to Figure 7. This embodiment of the present disclosure also provides a communication device 700, which includes a processor 701, a memory 702, and a computer program stored on the memory 702 and executable on the processor 701. The computer program is processed by the processor 701. When 701 is executed, each process of the above OAM code block receiving method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details will not be described here.

Embodiments of the present disclosure also provide a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the OAM code block receiving method embodiment is implemented, and can achieve the same technical effect, so to avoid repetition, we will not repeat them here. Wherein, the computer-readable storage medium is such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

It should be noted that, in this article, the terms “comprising”, “comprising” or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, but also other elements not expressly listed or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present disclosure can be embodied in the form of a software product in essence or that contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present disclosure.

It can be understood that the embodiments described in the embodiments of the present disclosure can be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, sub-modules, sub-units, etc. can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processing (DSP), Digital Signal Processing Equipment ( DSP Device (DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, microcontroller, microprocessor, for In other electronic units or combinations thereof that perform the functions described in the present disclosure.

The embodiments of the present disclosure have been described above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this disclosure, many forms can be made without departing from the purpose of this disclosure and the scope protected by the claims, all of which fall within the protection of this disclosure.

Claims (19)

A method for receiving OAM code blocks, including: The first device determines a window for detecting OAM code blocks at the channel layer of the metropolitan area transport network; The first device detects OAM code blocks in the code block stream within the window. The method according to claim 1, wherein the first device determines a window for detecting metropolitan area transport network channel layer OAM code blocks, including: After detecting at least one OAM code block, the first device determines the window based on the position of the detected OAM code block and the OAM code block period. The method according to claim 2, wherein determining the window according to the detected position of the OAM code block and the OAM code block period includes: According to the detected position of the OAM code block and the OAM code block period, the position point where the OAM code block periodically appears is determined; each time window including the position point is used as the window. The method of claim 1, wherein the length of the window is determined according to a preset ratio of the OAM code block period. The method of claim 1, further comprising: When the OAM code block period changes, the position and/or length of the window is adjusted according to the changed OAM code block period. The method according to claim 1, wherein before determining a window for detecting metropolitan area transport network channel layer OAM code blocks, the method further includes: The first device detects the code block stream block by block according to the control code block field and the O code field, and detects at least one OAM code block. The method of claim 1, further comprising: Obtain the first detection results of the OAM code blocks in each window; When the first detection result satisfies the first condition, an OAM loss alarm is generated. The method of claim 7, wherein the first condition includes at least one of the following: The window in which consecutive OAM code blocks are not detected reaches the first number; Within the continuous second number of detection windows, the windows in which OAM code blocks are not detected reach a third number, and the third number is smaller than the second number; No OAM code block is detected within the first time range. The method according to claim 7, wherein after the OAM loss alarm is generated, the method further includes: Obtain the second detection results of the OAM code blocks in each window; If the second detection result satisfies the second condition, the OAM loss alarm is eliminated. The method of claim 9, wherein the second condition includes at least one of the following: The window in which OAM code blocks are continuously detected reaches the fourth number; Within the continuous fifth number of detection windows, the windows in which OAM code blocks are detected reach the sixth number, and the sixth number is smaller than the fifth number; The OAM code block is detected within the second time range. The method according to any one of claims 7-10, further comprising: The detection of an OAM code block means that the OAM code block is detected within the window, and the type of the detected OAM code block matches the sending sequence sequence of the OAM code block type; The OAM code block is not detected means that the OAM code block is not detected within the window, or the type of the OAM code block detected within the window does not match the sending sequence sequence of the OAM code block type. The method of claim 1, further comprising: For the OAM code block of the preset type, obtain the third detection result of the OAM code block of the preset type within each first window, wherein the first window is a window used to detect the OAM code block of the preset type; When the third detection result satisfies the third condition, the OAM loss alarm of the preset type is generated. The method of claim 12, wherein the third condition includes at least one of the following: The first window in which consecutive OAM code blocks of the preset type are not detected reaches a seventh number; Within the eighth consecutive number of first detection windows, the number of first windows in which the OAM code blocks of the preset type are not detected reaches a ninth number, and the ninth number is less than the eighth number; The OAM code block of the preset type is not detected within the third time range. The method of claim 12, wherein when generating the preset type of OAM After the alarm is lost, it also includes: For the OAM code block of the preset type, obtain the fourth detection result of the OAM code block of the preset type in each first window; If the fourth detection result satisfies the fourth condition, the preset type of OAM loss alarm is eliminated. The method of claim 14, wherein the fourth condition includes at least one of the following: The first window in which the OAM code blocks of the preset type are continuously detected reaches the tenth number; Within the eleventh consecutive number of first detection windows, the first window in which the preset type of OAM code blocks is detected reaches a twelfth number, and the twelfth number is less than the eleventh number; The preset type of OAM code block is detected within a fourth time range. The method of claim 15, wherein conditions for detecting OAM code block loss are the same or different for different types of OAM code blocks. A communications device including: The first determination module is used to determine the window used to detect OAM code blocks at the metropolitan transport network channel layer; The first detection module is used to detect OAM code blocks in the code block stream within the window. A communication device, including: a processor, a memory, and a program stored on the memory and executable on the processor, wherein when the program is executed by the processor, any one of claims 1 to 16 is implemented. A step of the method described. A computer-readable storage medium having a computer program stored on the computer-readable storage medium, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 16 are implemented.